At 9" long and 4.5oz, the AP Custom USA carbon fiber Mid-length handguard is a lightweight but strong option for those interested in keeping their AR-15 as light as possible. To keep the weight down this handguard comes smooth, with ventilation slots at the 2, 3, 6, 9, and 10 o'clock positions. These slots also serve as attachment points for their QD sling mount, bipod stud, or Picatinny rail sections. Additionally the AP Custom handguard is designed to easily be installed using a standard AR-15 barrel nut and mil-spec AR-15 Armorer's tool.